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1 /*
2  * Mesa 3-D graphics library
3  *
4  * Copyright (C) 2004-2007  Brian Paul   All Rights Reserved.
5  * Copyright (C) 2010  VMware, Inc.  All Rights Reserved.
6  *
7  * Permission is hereby granted, free of charge, to any person obtaining a
8  * copy of this software and associated documentation files (the "Software"),
9  * to deal in the Software without restriction, including without limitation
10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11  * and/or sell copies of the Software, and to permit persons to whom the
12  * Software is furnished to do so, subject to the following conditions:
13  *
14  * The above copyright notice and this permission notice shall be included
15  * in all copies or substantial portions of the Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23  * OTHER DEALINGS IN THE SOFTWARE.
24  */
25 
26 
27 #ifndef SHADERAPI_H
28 #define SHADERAPI_H
29 
30 
31 #include "glheader.h"
32 #include "compiler/shader_enums.h"
33 #include "util/mesa-sha1.h"
34 
35 #ifdef __cplusplus
36 extern "C" {
37 #endif
38 
39 struct hash_entry;
40 struct _glapi_table;
41 struct gl_context;
42 struct gl_linked_shader;
43 struct gl_pipeline_object;
44 struct gl_program;
45 struct gl_program_resource;
46 struct gl_shader;
47 struct gl_shader_program;
48 struct gl_resource_name;
49 struct gl_shared_state;
50 struct gl_uniform_block;
51 
52 extern GLbitfield
53 _mesa_get_shader_flags(void);
54 
55 extern const char *
56 _mesa_get_shader_capture_path(void);
57 
58 extern void
59 _mesa_copy_string(GLchar *dst, GLsizei maxLength,
60                   GLsizei *length, const GLchar *src);
61 
62 extern void
63 _mesa_use_shader_program(struct gl_context *ctx,
64                          struct gl_shader_program *shProg);
65 
66 extern void
67 _mesa_active_program(struct gl_context *ctx, struct gl_shader_program *shProg,
68 		     const char *caller);
69 
70 extern void
71 _mesa_compile_shader(struct gl_context *ctx, struct gl_shader *sh);
72 
73 extern void
74 _mesa_link_program(struct gl_context *ctx, struct gl_shader_program *sh_prog);
75 
76 extern unsigned
77 _mesa_count_active_attribs(struct gl_shader_program *shProg);
78 
79 extern size_t
80 _mesa_longest_attribute_name_length(struct gl_shader_program *shProg);
81 
82 extern void
83 _mesa_shader_write_subroutine_indices(struct gl_context *ctx,
84                                       gl_shader_stage stage);
85 
86 void
87 _mesa_use_program(struct gl_context *ctx, gl_shader_stage stage,
88                   struct gl_shader_program *shProg, struct gl_program *prog,
89                   struct gl_pipeline_object *shTarget);
90 
91 extern void
92 _mesa_copy_linked_program_data(const struct gl_shader_program *src,
93                                struct gl_linked_shader *dst_sh);
94 
95 extern bool
96 _mesa_validate_shader_target(const struct gl_context *ctx, GLenum type);
97 
98 
99 /* GL_ARB_program_resource_query */
100 extern const char*
101 _mesa_program_resource_name(struct gl_program_resource *res);
102 
103 int
104 _mesa_program_resource_name_length(struct gl_program_resource *res);
105 
106 bool
107 _mesa_program_get_resource_name(struct gl_program_resource *res,
108                                 struct gl_resource_name *out);
109 
110 extern unsigned
111 _mesa_program_resource_array_size(struct gl_program_resource *res);
112 
113 extern GLuint
114 _mesa_program_resource_index(struct gl_shader_program *shProg,
115                              struct gl_program_resource *res);
116 
117 extern struct gl_program_resource *
118 _mesa_program_resource_find_name(struct gl_shader_program *shProg,
119                                  GLenum programInterface, const char *name,
120                                  unsigned *array_index);
121 
122 extern struct gl_program_resource *
123 _mesa_program_resource_find_index(struct gl_shader_program *shProg,
124                                   GLenum programInterface, GLuint index);
125 
126 extern struct gl_program_resource *
127 _mesa_program_resource_find_active_variable(struct gl_shader_program *shProg,
128                                             GLenum programInterface,
129                                             const struct gl_uniform_block *block,
130                                             unsigned index);
131 
132 extern bool
133 _mesa_get_program_resource_name(struct gl_shader_program *shProg,
134                                 GLenum programInterface, GLuint index,
135                                 GLsizei bufSize, GLsizei *length,
136                                 GLchar *name, bool glthread,
137                                 const char *caller);
138 
139 extern unsigned
140 _mesa_program_resource_name_length_array(struct gl_program_resource *res);
141 
142 extern GLint
143 _mesa_program_resource_location(struct gl_shader_program *shProg,
144                                 GLenum programInterface, const char *name);
145 
146 extern GLint
147 _mesa_program_resource_location_index(struct gl_shader_program *shProg,
148                                       GLenum programInterface, const char *name);
149 
150 extern unsigned
151 _mesa_program_resource_prop(struct gl_shader_program *shProg,
152                             struct gl_program_resource *res, GLuint index,
153                             const GLenum prop, GLint *val, bool glthread,
154                             const char *caller);
155 
156 extern void
157 _mesa_get_program_resourceiv(struct gl_shader_program *shProg,
158                              GLenum programInterface, GLuint index,
159                              GLsizei propCount, const GLenum *props,
160                              GLsizei bufSize, GLsizei *length,
161                              GLint *params);
162 
163 extern void
164 _mesa_get_program_interfaceiv(struct gl_shader_program *shProg,
165                               GLenum programInterface, GLenum pname,
166                               GLint *params);
167 
168 extern void
169 _mesa_program_resource_hash_destroy(struct gl_shader_program *shProg);
170 
171 extern void
172 _mesa_create_program_resource_hash(struct gl_shader_program *shProg);
173 
174 /* GL_ARB_shader_subroutine */
175 void
176 _mesa_program_init_subroutine_defaults(struct gl_context *ctx,
177                                        struct gl_program *prog);
178 
179 GLcharARB *
180 _mesa_read_shader_source(const gl_shader_stage stage, const char *source,
181                          const uint8_t sha1[SHA1_DIGEST_LENGTH]);
182 
183 void
184 _mesa_dump_shader_source(const gl_shader_stage stage, const char *source,
185                          const uint8_t sha1[SHA1_DIGEST_LENGTH]);
186 
187 void
188 _mesa_init_shader_includes(struct gl_shared_state *shared);
189 
190 size_t
191 _mesa_get_shader_include_cursor(struct gl_shared_state *shared);
192 
193 void
194 _mesa_set_shader_include_cursor(struct gl_shared_state *shared, size_t cusor);
195 
196 void
197 _mesa_destroy_shader_includes(struct gl_shared_state *shared);
198 
199 const char *
200 _mesa_lookup_shader_include(struct gl_context *ctx, char *path,
201                             bool error_check);
202 
203 #ifdef __cplusplus
204 }
205 #endif
206 
207 #endif /* SHADERAPI_H */
208